Never say that forensics is always a “noble ” science. There are real thugs resisting scientific progress at every turn. Some in this story are DAs along with a small pack of AAFS/ABFO bite mark “crime fighters.” They got hammered by the 2009 NAS report and now are the focus of two US Congressional committees looking to get rid of unreliables within the forensic communities.
http://www.buffalo.edu/atbuffalo/article-page-winter-2014.host.html/content/shared/www/atbuffalo/articles/spring-2014/features/false-impressions.detail.html